[1]吴秉校,侯雷,宋敏敏,等. 西安市NDVI时空演变分析[J].西北林学院学报,2016,31(4):213-220.[doi:doi:10.3969/j.issn.1001-7461.2016.04.36]
 WU Bing-xiao,HOU Lei,SONG Min-min,et al.NDVI Temporal and Spatial Evolution Analysis in Xian[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2016,31(4):213-220.[doi:doi:10.3969/j.issn.1001-7461.2016.04.36]
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 西安市NDVI时空演变分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第31卷
期数:
2016年第4期
页码:
213-220
栏目:
出版日期:
2016-07-31

文章信息/Info

Title:
NDVI Temporal and Spatial Evolution Analysis in Xian
文章编号:
1001-7461(2016)04-0213-08
作者:
 吴秉校侯雷宋敏敏吴发启*
 (西北农林科技大学 资源环境学院,陕西 杨陵 712100)
Author(s):
 WU Bing-xiaoHOU LeiSONG Min-minWU Fa-qi*
 (College of Natural Resources and Environment,Northwest A&F University,Yangling,Shaanxi 712100,China)
关键词:
 MODIS NDVI植被遥感监测植被覆盖度趋势分析
Keywords:
 MODIS NDVI vegetation remote sensing vegetation coverage trend analysis
分类号:
S127
DOI:
doi:10.3969/j.issn.1001-7461.2016.04.36
文献标志码:
A
摘要:
NDVI时空演变可以反映研究区生态环境变化和水土流失情况,是进行水土保持工作的重要参考指标。利用8年期MODIS NDVI构建时序数据集,借鉴时空数据分析模型,以栅格像元为分析单元,对西安市2003-2010年的NDVI变异系数、变化趋势进行分析,并对2003年和2010年地表植被覆盖度进行反演。结果表明,西安市总体植被生长状况平稳良好,南部山地和渭河洪冲积平原区植被长势维持平稳,沿山洪积扇、黄土台塬区以及骊山低山丘陵区植被恢复效果显著,在新建城区和城市重点开发区植被出现退化趋势。经过分析,引起西安市局地植被退化的主要因素为人为建设造成的植被破坏。基于像元的变化趋势分析更易于体现区域NDVI时空演变的细节信息。
Abstract:
 The temporal evolution of normalized difference vegetation index (NDVI) may reflect the changes in the ecological environment and soil erosion.It is an important index of soil and water conservation.By building MODIS NDVI time series data sets from 2003 to 2010 in Xi’an,referring the temporal data analysis model to raster cell as the unit of analysis and using of raster data analysis techniques,the coefficient of variation of NDVI and changing trend in Xi’an during 2003-2010 were analyzed,the vegetation coverage was inversed.The results showed that the overall situation of vegetation growth was satisfactory.The vegetation growth in the Qinling Mountains and the flood alluvial plain of Wei River was stable.The vegetation restoration was remarkable in hillside alluvial fan,the Loess Plateau area,and Lishan Mountain,but the coverage was decreasing in urban developing area.The research showed that the main factors causing the degradation of vegetation in Xi’an was man-made construction.Pixel-based analysis is easier to achieve regional NDVI change details.

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备注/Memo

备注/Memo:
 收稿日期:2015-10-12修回日期:2015-12-11
基金项目:西安市水土保持规划编制前期研究。
作者简介:吴秉校,男,硕士,研究方向:水土保持“3S”应用。E-mail:18291936701@163.com
*通信作者:吴发启,男,教授,博士生导师,研究方向:水土保持与GIS应用。E-mail:wufaqi@263.net
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